A Quantitative Infrared Imaging System for In Situ Characterization of Composite Materials in Fire Tests

Sánchez-Carballido, Sergio; Justo-María, C.; Meléndez, Juan; López, Fernando Martínez

doi:10.1007/s10694-016-0636-9

Cited by 7 publications

(8 citation statements)

References 19 publications

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“…The process is continued until the whole composite is in flame. Ambient airflow changes the temperature of the flame as observed in [21] and [7]. The result clearly shows that application of fiber to metal alloy helps to retard the rate of heat releases and also increases the rate of smoke, as also observed in [22].…”

Section: Fig 3 Fibre-metal Laminates On Fire Testmentioning

confidence: 63%

Burn-Through Responses of Aero-Engine Nacelle using Fiber Metal Composites by ISO2685 Propane-Air Burner

Mohammed*,

Talib

2019

IJRTE

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The paper presents experimental investigation on the behavior and burn through responses of a flat plate composite of fiber-metal laminates composites of aluminum alloy 2024-T3 with carbon and natural fibers subjected to environmental conditions in fire designated zone of an aircraft engine exposed to fire. The main purpose of this study is to know the different burn through time responses of different forms of aluminum alloy with synthetic and natural fibers. The composites were designed and developed to improve the flame fire resistance in a fire designated zone of an aircraft engine in near future for prolonged burning through time that will at least withstand the fire flame for 15 minutes according to the ISO 2685 standard. The composites are fabricated by hand lay-up method in a mold of 300 mm x 300 mm and compressed by compression machine. Based on the obtained results, some of the composites are indicated to be fireproof while some others are fire resistant. It is shown that the carbon fiber reinforced aluminum alloy laminate with only aluminum at top and bottom (CF+AA) of the composites can resist more flame temperature than the carbon fiber reinforced aluminum alloy laminate with alternate layers of aluminum and carbon fiber (CARALL) with 7.86%, the sandwich of carbon fiber with flax with 18.2% and the sandwich of carbon fiber with kenaf with 23.43%. In conclusion, the study reveals that aluminum alloy 2024-T3 with carbon fiber and some types of natural fibers composites possess good properties of resisting high temperature of fire designated zone of an aircraft engine nacelle.

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Section: Fig 3 Fibre-metal Laminates On Fire Testmentioning

confidence: 63%

Burn-Through Responses of Aero-Engine Nacelle using Fiber Metal Composites by ISO2685 Propane-Air Burner

Mohammed*,

Talib

2019

IJRTE

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“…In a real sample, heat losses imply that T lim is not reached, but its value can be calculated from the maximum temperature at the rear of the sample T max and the Biot number. 5,6 Thus, using a lamp with known Q makes it possible to find ρ•c p and therefore κ.…”

Section: Flash Testmentioning

confidence: 99%

“…However, this kind of process is quite different from the fast and inhomogeneous heating experimented by a material exposed to a fire, and therefore it becomes necessary to perform a test with a real fire and analyze the behavior of the material in situ. Since the evolution of the slope of the temperature versus time profiles provides information on critical temperatures, 5,11 this test could provide realistic values for T c1 , T c2 in thermoplastics. The test could give also valuable information to calculate thermal parameters at temperature ranges above 150 • C, where step heating experiments were not well fitted by the room temperature values (see Figure 3).…”

Section: Thermal Characterization Of Thermoplastics Under Firementioning

confidence: 99%

“…However, these tests are destructive, expensive, and cumbersome to perform, and so it would be highly desirable to minimize their number, by maximizing the information obtained from each of them. In this work, we employ an innovative measurement setup, previously developed, 5 for the fire test. Using two co-registered IR cameras, it provides accurate, non-intrusive measurements of the actual temperature distribution at both faces of the sample, as a function of time, in the real test conditions.…”

Section: Introductionmentioning

confidence: 99%

“…Using two co-registered IR cameras, it provides accurate, non-intrusive measurements of the actual temperature distribution at both faces of the sample, as a function of time, in the real test conditions. This information, together with values of thermal parameters obtained with an adapted flash method, 5,6 is used by a thermo-mechanical finite-element model (FEM) to simulate the behavior of the material. The comparison of simulation and experimental measurements allows for the adjustment and validation of the model.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Thermal characterization of thermoplastic composites under high temperature and fire by infrared imaging

Meléndez

Benito

López-Béjar

et al. 2021

Thermosense: Thermal Infrared Applications XLIII

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In the last decades, composite materials, particularly thermosetting carbon fiber reinforced polymers, have become the main structural material for the aerospace industry. Recently, interest has grown in thermoplastic composites, since they are chemically more stable, faster to process, fatigue-resistant and recyclable. Nevertheless, when submitted to high temperatures these materials may degrade in ways not presently well known. Therefore, the study of the thermo-mechanical properties of thermoplastic composites when exposed to fire or high-temperature events is of primary interest. In particular, a good knowledge of its behavior could improve physical modeling to the point of reducing the number of prescribed fire tests by virtualizing some of them. The first step is to measure the thermal parameters of real samples in a practical way. We have established a methodology that extends the classical flash method to obtain the effective thermal parameters (diffusivity, specific heat, heat conductivity, and Biot number) of thermoplastic composite materials by a non-contact method based on IR imaging. Values obtained have been used to simulate thermal behavior with a FEM-based solver, from room temperature up to 900 • C, with an agreement with experimental data better than 1 % in temperature (K) for temperatures below ∼ 260 • C and better than 3% up to ∼ 850 • C.

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Measurement of the Thermal Parameters of Composite Materials During Fire Tests with Quantitative Infrared Imaging

et al. 2017

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A Quantitative Infrared Imaging System for In Situ Characterization of Composite Materials in Fire Tests

Cited by 7 publications

References 19 publications

Burn-Through Responses of Aero-Engine Nacelle using Fiber Metal Composites by ISO2685 Propane-Air Burner

Burn-Through Responses of Aero-Engine Nacelle using Fiber Metal Composites by ISO2685 Propane-Air Burner

Thermal characterization of thermoplastic composites under high temperature and fire by infrared imaging

Measurement of the Thermal Parameters of Composite Materials During Fire Tests with Quantitative Infrared Imaging

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